Dispater
Dispater is the foremost arms dealer of the Nine Hells, and perhaps the greatest weapons supplier in all the planes. As the lord of Dis, he oversees a mining and smelting operation that continually churns out weapons and armor. Using some of the great number of secret techniques Dispater has unearthed over his lifetime, the foundries of Dis produce deadly armaments that help to stem the abyssal tide. The fighting requires constant reinforcements, creating a voracious appetite for the products of the iron mines on Dis and the workshops in the sprawling metropolis that shares the name of the layer.
Dispater trusts no one and dislikes surprises. Since Zariel’s rise to power, he has taken to dwelling in the libraries inside his iron palace. He employs a network of spies and informants to watch over anyone that might threaten him, a measure of his deep paranoia. Dispater has created an impenetrable suit of adamantine armor for himself, imbued with charms designed to foil spells and keep him safe in any environment, no matter how hostile. No one can guess at all of its features, since he crafted it using methods that only he has mastered.
Dispater’s paranoia affects everything he does. For example, he often dispatches orders and other missives by branding his message on the back of an imp. The imp wears a leather vest that conceals the message, and the laces of the vest are knitted into the imp’s heart. If the vest is removed by anyone other than the intended recipient, that act kills the imp and causes its body to disintegrate before the message can be read.
The lord of Dis measures everything in terms of the knowledge it contains and the secrets that can be gleaned from it. He yearns to solve every mystery of the cosmos, a quest that might seem foolhardy for anyone other than an immortal being. Any hint of a secret that remains hidden draws his attention, and a discovery that could tip the scales in his favor might be enough to entice him to act against his fellow Lords of the Nine.
Given his reclusive nature, gaining an audience with Dispater is difficult at best, with no guarantee that any correspondence truly reaches him.